Description
Siemens Acceleration Sensor for First-Generation Peugeot 307
Replace or upgrade the acceleration sensor with this Siemens unit designed for first-generation Peugeot 307 vehicles. This direct-fit sensor restores accurate longitudinal acceleration measurement used by vehicle safety and stability systems. Commonly searched by part numbers 9648829080, 5WK42989 and 8216AL, this component is ideal for professional workshops and experienced DIY mechanics who prioritize correct fitment and reliable performance.
Technical Information
- Manufacturer: Siemens
- Model: Peugeot 307 (First Generation)
- Product Codes: 9648829080, 5WK42989, 8216AL
- Additional Numbers: Stellantis / Citroën / Peugeot references (NFP shown in original listing)
Function And Application
The acceleration sensor measures longitudinal acceleration/deceleration and supplies this data to vehicle control units responsible for safety and dynamic stability (e.g., airbag control logic, ABS/ESP and traction systems). Accurate readings are critical for correct deployment thresholds and stability interventions. Designed as a direct replacement for the OEM sensor fitted to many first-generation Peugeot 307 cars.
Compatibility And Fitment
Designed primarily for Peugeot 307 (first generation). Search by OEM part numbers 9648829080 / 5WK42989 / 8216AL to confirm fitment for specific chassis and equipment levels. This sensor is commonly cross-referenced within the Stellantis parts system for Citroën/Peugeot models of the same platform.
Installation Recommendations
- Always disconnect the vehicle battery and wait a few minutes before starting work to avoid SRS/electrical damage.
- Locate the sensor (typically mounted to the vehicle body in a central area—under the dashboard or on the central tunnel depending on model and equipment). Remove necessary trim panels to gain access.
- Unplug the electrical connector and unfasten the mounting bolts. Keep the orientation of the sensor the same when installing the new unit; incorrect orientation can lead to wrong sensor output.
- Install the replacement sensor and tighten fasteners to the manufacturer’s specified torque. Reconnect the wiring harness securely and reassemble trim.
- After installation perform a full system check. Some systems require initialization or calibration with a diagnostic tool to clear fault codes and ensure correct operation—this should be done according to manufacturer procedures.
- If unsure about access, calibration or SRS-related procedures, have the replacement carried out by a qualified technician.
Most Common Causes Of Failure
- Mechanical damage from collisions or impacts—sensors can be damaged or knocked out of alignment during an accident.
- Electrical faults such as corroded connectors, damaged wiring or intermittent contacts due to moisture ingress.
- Environmental exposure—water, road salt and long-term corrosion can degrade connectors and housings.
- Internal sensor drift or electronic failure over time. The sensor is not a scheduled wear item; failures are typically event-driven rather than due to routine wear.
Searchability by part number makes this sensor easy to find (9648829080 / 5WK42989 / 8216AL). For reliable replacement and correct system operation, follow the installation recommendations and perform any required diagnostic checks or calibrations after fitting.
